Impact of Playing Soccer on the Incidence of Arthritis
Does this study suggest that the more soccer you play, the greater the risk of arthritis of the hip or knee?
Identify the explanatory and response variables to inform how you construct your fractions for comparison.
What is the risk of arthritis for those that play professional soccer?
What is the risk of arthritis for those that play non-professional soccer?
What is the risk of arthritis for those that do not play soccer?
What is the relative risk of developing arthritis if you play non-professional soccer? (Use non-players as the basis of your comparison.) Write a sentence that communicates the meaning of this number.
What is the relative risk of developing arthritis if you play professional soccer? (Use non-players as the basis of your comparison.) Write a sentence that communicates the meaning of this number.
Final answer:
The study suggests that playing soccer, both professionally and non-professionally, may increase the risk of developing arthritis of the hip or knee compared to not playing soccer. The risk of arthritis is approximately 14.3% for professional soccer players, 3.8% for non-professional soccer players, and 4.2% for those who do not play soccer. The relative risk of developing arthritis is about 87.5% for non-professional soccer players compared to non-players, and about 62.5% for professional soccer players compared to non-players.
Explanation:
The study in Sweden aimed to investigate the impact of playing soccer on the incidence of arthritis of the hip or knee. The researchers collected information on three groups: former professional soccer players, people who played soccer but not professionally, and those who never played soccer. The study focused on comparing the risk of arthritis among these groups.
To determine if the more soccer you play, the greater the risk of arthritis, the researchers analyzed the data and calculated the relative risk of developing arthritis for professional soccer players and non-professional soccer players compared to those who never played soccer.
The explanatory variable in this study is the level of soccer play (professional, non-professional, or no play), while the response variable is the incidence of arthritis of the hip or knee.
The risk of arthritis for those who play professional soccer is 20 out of 140, which is approximately 14.3%.
The risk of arthritis for those who play non-professional soccer is 28 out of 728, which is approximately 3.8%.
The risk of arthritis for those who do not play soccer is 32 out of 759, which is approximately 4.2%.
The relative risk of developing arthritis if you play non-professional soccer, compared to not playing soccer, is calculated by dividing the risk of arthritis for non-professional soccer players by the risk of arthritis for non-players. In this case, it is 28/32, which is approximately 0.875. This means that the risk of developing arthritis is about 87.5% for non-professional soccer players compared to those who do not play soccer.
The relative risk of developing arthritis if you play professional soccer, compared to not playing soccer, is calculated by dividing the risk of arthritis for professional soccer players by the risk of arthritis for non-players. In this case, it is 20/32, which is approximately 0.625. This means that the risk of developing arthritis is about 62.5% for professional soccer players compared to those who do not play soccer.